Common Projector Features
Understanding projection technology and terminology
Before you start comparing different projector types and manufacturers, you will need to get a handle on what you intend to use your projector for. But you won’t be able to figure out which projectors are mostly likely to meet your needs unless you know a bit about projection technology and understand some of the basic criteria for rating a projector’s performance.
Image qualityis one of the most important factors when it comes to choosing a projector, and it depends on several measures:
The ideal projector for displaying text won’t necessarily be the best still life projector or the top-rated video projection system, so it helps to know before you start what kind of media you plan to project. You will also want to compare the specifications of the equipment you have already with what you intend to purchase so that you find the best match. If your multimedia or video source and your projector are compatible you’re going to get a better looking image onscreen.
When you’re rating and comparing projectors for image quality, it will help to understand the different kinds of display technology, so that you can make an informed decision whether a CRT, LCoS, LCD or DLP projector is best for you.
Other details may influence your decision as well. Make sure the projector has all the data and video inputs you’ll require so that you’re not needlessly switching cables around. Including audio in your PowerPoint presentation is a possibility as well if your projector has an audio input and an on-board speaker, but the volume and sound quality tend to be fairly limited. If high grade sound matters to you (when you’re watching movies or playing video games), you will probably want to integrate your projector with your home audio system, using an external amplifier and speakers and maybe taking advantage of surround sound.
The special features and options offered by many manufacturers may sway you in a particular direction as well. For example, keystone correction and lens shift come in handy if your projection display system won’t be centered in front of the screen. This is because without these components, you end up with a misshapen picture. Keystone correction maintains a more square or rectangular projection by adjusting the image digitally or tilting the lens. Lens shift is more common in home theater systems and high-end projectors, making it possible to move the lens vertically, and in some models, horizontally as well, producing a more natural image.
Looking at a projector’s specifications can tell you a lot about the machine, but the best measure of a display system’s value is in its performance. Unfortunately, you won’t come across too many projector demos in your local electronic stores, so your best tool when you’re purchasing a new projector is to get a good grasp on the technology and terminology. As an educated consumer you can feel confident in your purchase and take advantage of the better prices you’re likely to find online.
